I'm far from convinced that this coming bout of stagflation will be ameliorated by higher interest rates.
Controlling inflation with monetary policy assumes that rising prices are caused by too much money chasing goods and services, and that making money more expensive reduces demand, and cools prices. This is not what's happening now.
Current inflation is caused by supply side constraints - labour shortages, sticky supply chains - and high input costs such as energy and materials. Raising interest rates and tightening the money supply isn't going to change that. It's going to increase the cost of capital on the supply side, driving prices higher, and any effect on demand is going to come in discretionary consumer spending which the UK economy depends on. What's really causing the hurt in rising prices - food, fuel, and energy - actually has relatively inelastic demand compared to holidays, clothing, hospitality, leisure, toys, electronics and so on. If it follows the pattern of previous downturns the only growth area is going to be in vices: gambling in particular, but also tobacco and booze.
Saving, not spending, is one approach, but if your pay rise doesn't match price rises then at a personal level you'd actually be better off bringing purchases of non-perishables forward if you've got the cashflow to do so. A £1.20 bottle of cooking oil in your cupboard now - even if you won't need it until October - is better than spending £1.80 on one in September if your pay only goes up by 5% and you only get 0.25% interest at the bank in the meantime.